OK, here's the last of my Timbertech saga. Its 8 years old and I hate Timbertech. I hope they had their pants sued off. I was going to replace it with Azek this year or next, but due to financial constraints, I thought I'd give one more try with a coating. Last year we had one coat of a Pittsburgh Paint Composite deck coating. I did not think it was a heavy enough coat and needed a second coat. It was like painting a sponge..so porous, it took more paint than estimated. But rains came and we could not get on that second coat until this summer. There was a considerable amount of mold before I cleaned it in preparation for the second coat. I did the second coat this summer, took me 6 hours in 90 degree heat (wish the inventor of Timbertech was there to join me), but the result has been a waterproof coating that has not molded all summer. (yet). I don't know how long this coating will last, but it has bought us one more seaon until we sink the money into AZEK. Having a painted surface does not look top notch, but it looks better than mold. I would definitely recommend coating an old ugly moldy Timbertech deck with a composite stain, 2 coats. Or else just tear it out and use AZEK. That is all. The end. I am never doing all that again.